php慢查询日志和错误日志使用详解

; The log file for slow requests
; Default Value: not set
; Note: slowlog is mandatory if request_slowlog_timeout is set
;slowlog = log/$pool.log.slow

; The timeout for serving a single request after which a PHP backtrace will be
; dumped to the 'slowlog' file. A value of '0s' means 'off'.
; Available units: s(econds)(default), m(inutes), h(ours), or d(ays)
; Default Value: 0
;request_slowlog_timeout = 0

slowlog 设置慢查询日志的生成目录
request_slowlog_timeout 设置慢查询的标准时间（打开此配置就相当于开启了慢查询日志），配置以秒为单位，一般设置3s。

php-error 错误日志

在生产环境中是不允许php报错的，就算报错也是白屏或者500，所以在生产环境中的日志收集是非常重要的。

开启错误日志

一般情况下，php错误日志的配置都在php.ini文件中

/usr/local/php/etc/php.ini
---------------------------
error_reporting = E_ALL & ~E_DEPRECATED & ~E_STRICT
display_errors = Off
log_errors = On
; Log errors to specified file. PHP's default behavior is to leave this value
; empty.
; http://php.net/error-log
; Example:
;error_log = php_errors.log
; Log errors to syslog (Event Log on Windows).
;error_log = syslog

error_log = /var/log/php_error.log
display_errors = Off
error_reporting = E_ALL
log_errors = On